Liquid Nitrogen Cryogenic Planetary Ball Mill XQM-C Series 1-12L Low Temperature Grinding

Liquid Nitrogen Planetary Ball Mill, XQM-C Series

Overview

The liquid nitrogen planetary ball mill is a planetary mill in which the grinding jars sit inside a heat-shielded environment into which liquid nitrogen gas is continuously fed. The cold gas takes up the heat generated by the high-speed movement of the grinding balls straight away, so the grinding space inside the jar stays at a low temperature for the whole run rather than only at the start of it.

The machine is intended for mixing, fine grinding, small-batch sample preparation, small-batch production and new product development. It is compact, fully functional, quiet, efficient and simple to operate, which is why it is used in research institutes, universities and corporate laboratories. Four grinding jars are normally fitted, so four different samples can be prepared in one run, and the mill can also be supplied with a vacuum grinding jar for grinding in a vacuum atmosphere.

How the low-temperature environment is maintained

The jars are enclosed in a heat shield, and liquid nitrogen gas is introduced into that enclosure continuously instead of being charged once. Because the cold gas is in contact with the jar environment while the mill is running, the heat produced by the grinding balls at high speed is absorbed as it is generated, so the working temperature stays within the controlled band instead of climbing through the cycle. That gives a stable low-temperature grinding space for the duration of the process.

Applications

The mill is used in geology, mining, metallurgy, electronics, building materials, ceramics, chemicals, light industry, medicine and environmental protection. Typical materials include electronic and structural ceramics, magnetic materials, lithium cobalt oxide and lithium manganese oxide, catalysts, phosphors, long-afterglow luminescent powders, rare-earth polishing powders, glass powders, fuel-cell materials, zinc oxide varistors, piezoelectric ceramics, nanomaterials, capacitors, MLCC, thermistors (PTC and NTC), ZnO varistors, dielectric ceramics, alumina and zirconia ceramics, phosphor powders, zinc oxide and cobalt oxide powders, and Ni-Zn and Mn-Zn ferrites.

Technical parameters

Liquid nitrogen system

• Working temperature control range: -40 °C to 20 °C
• Gas consumption (0-10 °C): 4-5 litres per hour
• Machine dimensions: 460 * 660 * 720 mm
• Machine net weight: approximately 80 kg
• Compatible liquid nitrogen tanks: 30 litres / 50 litres

Mill models — other parameters are the same as the XQM-(2-6) series.

Ordering information

The XQM-C series covers jar volumes from 1 L to 12 L, with 0.75 kW or 1.5 kW drives, single-phase 220 V or 110 V supply, and a working temperature range of -40 °C to 20 °C. When enquiring, please confirm the material to be ground, the jar volume and material required, and the temperature the process has to hold, so that the right model and liquid nitrogen tank size can be quoted.